I get lines in the output with openshot - not as much with kino

[svaughan]

See question 118959. I'm not sure if this is a bug or if I'm doing something wrong.

In response to Andy Finch's reply --

1. The video still gets bad lines when played in ffplay and in melt
2. Here are the details from running ffmpeg -i filename

$ ffmpeg -i ~/Desktop/'joshuas_1st_year v3.vob'
FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --extra-version=4:0.5.1-1ubuntu1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
  libavutil 49.15. 0 / 49.15. 0
  libavcodec 52.20. 1 / 52.20. 1
  libavformat 52.31. 0 / 52.31. 0
  libavdevice 52. 1. 0 / 52. 1. 0
  libavfilter 0. 4. 0 / 0. 4. 0
  libswscale 0. 7. 1 / 0. 7. 1
  libpostproc 51. 2. 0 / 51. 2. 0
  built on Mar 4 2010 12:35:30, gcc: 4.4.3

Seems stream 0 codec frame rate differs from container frame rate: 59.94 (60000/1001) -> 29.97 (30000/1001)
Input #0, mpeg, from '/home/steve/Desktop/joshuas_1st_year v3.vob':
  Duration: 00:22:17.50, start: 0.500000, bitrate: 5284 kb/s
    Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x480 [PAR 8:9 DAR 4:3], 104857 kb/s, 29.97 tbr, 90k tbn, 59.94 tbc
    Stream #0.1[0x80]: Audio: ac3, 48000 Hz, stereo, s16, 256 kb/s

[Andy Finch (fincha)]

I see the same thing using mlt 0.5.6. I've tagged it for mlt, unfortunately we can't do much about it as it seems to be a problem in ffmpeg. You might want to try transcoding your files to a different format (using a tool such as EKD), that might help.

[Daniel Ellis (danellisuk)]

Personally, I still have a gut feeling that there is a general problem with DV camera footage on Linux which results in the field order being processed the wrong way round. See my comment on this other bug (https://bugs.launchpad.net/openshot/+bug/508334/comments/1)
Looking at your clip, I would guess that MLT is processing the video with the wrong field order, and those wavy lines are interpolation to smooth out the interlacing. But because this the field order is wrong the interlacing is more extreme.
But I don't know much about this. I just thought I would add a note in-case it is of use, but it may well not be.

[svaughan (svau)]

You may have a point. Last night I got what appeared to be the same undesirable
condition in Cinelerra by applying the deinterlacing effect to a clip. Without
the deinterlacing effect applied, the clip worked well.

In OpenShot the video worked fine on a video clip that was not taken with my
camera. The same clip, that was processed in kino rather than OpenShot, played
correctly in melt and plays correctly in other players as well.

The issue manifests itself with OpenShot and the JVC camera regardless of the
video file type (dv, .avi, .mod, etc etc). Processing the video in the wrong
field order sounds like a likely reason for the problem. Other than this one
issue, it all works fine.

Is there any way to reverse the field order in OpenShot by the command line or
some other means? Thanks for your idea. steve v

________________________________
From: Daniel Ellis <email address hidden>
To: <email address hidden>
Sent: Thu, July 29, 2010 5:43:19 PM
Subject: [Bug 610295] Re: I get lines in the output with openshot - not as much
with kino

Personally, I still have a gut feeling that there is a general problem with DV
camera footage on Linux which results in the field order being processed the
wrong way round. See my comment on this other bug
(https://bugs.launchpad.net/openshot/+bug/508334/comments/1)
Looking at your clip, I would guess that MLT is processing the video with the
wrong field order, and those wavy lines are interpolation to smooth out the
interlacing. But because this the field order is wrong the interlacing is more
extreme.
But I don't know much about this. I just thought I would add a note in-case it
is of use, but it may well not be.

--
I get lines in the output with openshot - not as much with kino
https://bugs.launchpad.net/bugs/610295
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